Buckover Road Cutting () is a 1.7 hectare geological Site of Special Scientific Interest near the town of Thornbury, South Gloucestershire, notified in 1967. The site shows an unconformity between Silurian rocks and quartz conglomerate of the Devonian period. References External links English Nature citation sheet for the site (accessed 9 July 2006) Sites of Special Scientific Interest in Avon Sites of Special Scientific Interest notified in 1967 Road cuttings in the United Kingdom Transport in Gloucestershire Geology of Gloucestershire Thornbury, Gloucestershire